chkstat follows untrusted symbolic links
The chkstat tool in the permissions package followed symlinks before commit a9e1d26cd49ef9ee0c2060c859321128a6dd4230 (please also check the additional hardenings after this fix). This allowed local attackers with control over a path that is traversed by chkstat to escalate privileges.
- Published
- Dec 5, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 35th percentile
- CWE
- CWE-59
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CNA vs NVD score
- NVD
- 7.8
- CNA · suse
- 6.8
- 1.0 point gap
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| opensuse | leap | cpe:2.3:o:opensuse:leap |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- opensuse leap15.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (suse). Independent of NVD's CPE analysis and usually ahead of it.
SUSE permissions
- unspecified and later · before a9e1d26cd49ef9ee0c2060c859321128a6dd4230affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| openSUSE:Leap 15.1 | permissions | before 20181116-lp151.4.9.1 | 20181116-lp151.4.9.1 |
| openSUSE:Tumbleweed | permissions | before 1550_20210901.1550-29.2 | 1550_20210901.1550-29.2 |
| SUSE:HPE Helion OpenStack 8 | permissions | before 2015.09.28.1626-17.20.1 | 2015.09.28.1626-17.20.1 |
| SUSE:Linux Enterprise Desktop 12 SP4 | permissions | before 20170707-3.14.1 | 20170707-3.14.1 |
| SUSE:Linux Enterprise High Performance Computing 15-ESPOS | permissions | before 20180125-3.21.1 | 20180125-3.21.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 | permissions | before 20180125-3.18.1 | 20180125-3.18.1 |
| SUSE:Linux Enterprise Point of Sale 11 SP3 | permissions | before 2013.1.7-0.6.5.1 | 2013.1.7-0.6.5.1 |
| SUSE:Linux Enterprise Server 12 SP5 | permissions | before 20170707-6.4.1 | 20170707-6.4.1 |
Same product
opensuse: all recordsOther highest-scoring records for the same primary product.
- CVE-2016-0749The smartcard interaction in SPICE allows remote attackers to cause a denial of service (QEMU-KVM process crash) or possibly execute arbitra42Plan
- CVE-2015-8863Off-by-one error in the tokenadd function in jv_parse.c in jq allows remote attackers to cause a denial of service (crash) via a long JSON-e41Plan
- CVE-2019-18903wicked: Use-after-free when receiving invalid DHCP6 IA_PD option40Plan
- CVE-2019-18902wicked: Use-after-free when receiving invalid DHCP6 client options40Plan
- CVE-2016-4007Multiple unspecified vulnerabilities in the obs-service-extract_file package before 0.3-5.1 in openSUSE Leap 42.1 and before 0.3-3.1 in open40Plan
- CVE-2016-3982Off-by-one error in the bmp_rle4_fread function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| opensuse:permissions | 20181116-lp151.4.9.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| suse:permissions | 2013.1.7-0.6.5.1 · SUSE:Linux Enterprise Point of Sale 11 SP3 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Malte KrausSUSE
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-59 · Improper Link Resolution Before File Access ('Link Following')CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
- Obfuscated Files or Information: HTML SmugglingT1027.006
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Autostart Execution:Shortcut ModificationT1547.009
- Hide Artifacts: Resource ForkingT1564.009
- Hijack Execution Flow: Executable Installer File Permissions WeaknessT1574.005
- Hijack Execution Flow: Services File Permissions WeaknessT1574.010
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2019-12/msg00024.html
- bugzilla.suse.com/show_bug.cgi?id=1150734
Vendor advisories and official records. Exploit/PoC links are deliberately left out.